A man in Seattle explodes. The bomb squad investigates, leading Lt. Tom to Gillian, a surgeon, who's implanting a pacemaker that explodes. Tom and Gillian chase her other pacemaker patients before they explode plus try to find the culprit.

An unlikely duo, Lieutenant Tom Royko of the Seattle Bomb Squad and renowned heart surgeon, Dr. Gillian Hayes, find themselves in a race against time to track down a disturbed bomber who is inexplicably causing Dr. Hayes' patients to explode.—Anonymous